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<a name="1" href="#1">1</a>   <strong class="jxr_keyword">package</strong> org.slf4j.impl;
<a name="2" href="#2">2</a>   
<a name="3" href="#3">3</a>   <strong class="jxr_keyword">import</strong> junit.framework.TestCase;
<a name="4" href="#4">4</a>   
<a name="5" href="#5">5</a>   <strong class="jxr_keyword">import</strong> org.slf4j.Logger;
<a name="6" href="#6">6</a>   <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory;
<a name="7" href="#7">7</a>   <strong class="jxr_keyword">import</strong> org.slf4j.helpers.BogoPerf;
<a name="8" href="#8">8</a>   
<a name="9" href="#9">9</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/slf4j/impl/PerfTest.html">PerfTest</a> <strong class="jxr_keyword">extends</strong> TestCase {
<a name="10" href="#10">10</a>  
<a name="11" href="#11">11</a>    <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">long</strong> REFERENCE_BIPS = 9000;
<a name="12" href="#12">12</a>  
<a name="13" href="#13">13</a>    <strong class="jxr_keyword">public</strong> <a href="../../../org/slf4j/impl/PerfTest.html">PerfTest</a>(String name) {
<a name="14" href="#14">14</a>      <strong class="jxr_keyword">super</strong>(name);
<a name="15" href="#15">15</a>    }
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setUp() <strong class="jxr_keyword">throws</strong> Exception {
<a name="18" href="#18">18</a>      <strong class="jxr_keyword">super</strong>.setUp();
<a name="19" href="#19">19</a>    }
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> tearDown() <strong class="jxr_keyword">throws</strong> Exception {
<a name="22" href="#22">22</a>      <strong class="jxr_keyword">super</strong>.tearDown();
<a name="23" href="#23">23</a>    }
<a name="24" href="#24">24</a>  
<a name="25" href="#25">25</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testBug72() {
<a name="26" href="#26">26</a>      
<a name="27" href="#27">27</a>      <strong class="jxr_keyword">int</strong> LEN = 1000*1000*10;
<a name="28" href="#28">28</a>      debugLoop(LEN); <em class="jxr_comment">// warm up</em>
<a name="29" href="#29">29</a>      <strong class="jxr_keyword">double</strong> avg = debugLoop(LEN);
<a name="30" href="#30">30</a>      <strong class="jxr_keyword">long</strong> referencePerf = 93;
<a name="31" href="#31">31</a>      BogoPerf.assertDuration(avg, referencePerf, REFERENCE_BIPS);
<a name="32" href="#32">32</a>  
<a name="33" href="#33">33</a>      <em class="jxr_comment">// when the code is guarded by a logger.isLoggable condition,</em>
<a name="34" href="#34">34</a>      <em class="jxr_comment">// duration is about 16 *micro*seconds for 1000 iterations</em>
<a name="35" href="#35">35</a>      <em class="jxr_comment">// when it is not guarded the figure is 90 milliseconds,</em>
<a name="36" href="#36">36</a>      <em class="jxr_comment">// i.e a ration of 1 to 5000</em>
<a name="37" href="#37">37</a>    }
<a name="38" href="#38">38</a>  
<a name="39" href="#39">39</a>    <strong class="jxr_keyword">double</strong> debugLoop(<strong class="jxr_keyword">int</strong> len) {
<a name="40" href="#40">40</a>      Logger logger = LoggerFactory.getLogger(PerfTest.<strong class="jxr_keyword">class</strong>);
<a name="41" href="#41">41</a>      <strong class="jxr_keyword">long</strong> start = System.currentTimeMillis();
<a name="42" href="#42">42</a>      <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; len; i++) {
<a name="43" href="#43">43</a>        logger.debug(<span class="jxr_string">"hello"</span>);
<a name="44" href="#44">44</a>      }
<a name="45" href="#45">45</a>  
<a name="46" href="#46">46</a>      <strong class="jxr_keyword">long</strong> end = System.currentTimeMillis();
<a name="47" href="#47">47</a>  
<a name="48" href="#48">48</a>      <strong class="jxr_keyword">long</strong> duration = end - start;
<a name="49" href="#49">49</a>      <strong class="jxr_keyword">return</strong> duration;
<a name="50" href="#50">50</a>    }
<a name="51" href="#51">51</a>  
<a name="52" href="#52">52</a>  }
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